Activation of JIT causes me problems for a long time with my configuration. On my A1200/060 Setup... RAM is filled when I browse the directories and never free it ! from where at a given moment a crash due to lack of memory!
With latest dev fs-uae.. fs-uae boot and stop at mount command failled.

With these changes FS-UAE does NOT crash. Your Amigatest.hdf boots straight into a guru. This also happens with JIT disabled and in WinUAE. Probably due to CPU instructions/68060.library stuff - I don't know... [Edit: removed LIBS:68040.library, provided LIBS:68060.library, now it works fine]
It appears to work with your config with jit disabled. But if you look closely you'll see, the Blizzard (and the 060) isn't emulated at all.

Next: I don't think the Test Drive II issue is JIT related. It also happens without jit on my system. Looks like the typical cpu-is-to-fast-problem.